Wood County in Ohio, with a population of 130,000, has voted for the winner in 23 of the last 29 presidential elections.
ITV News spoke to people in the city of Perrysburg to get a picture of who might so far have the lead in the presidential race.
Many said that they didn't vote for either Republican nominee Donald Trump or his Democract opponent Hillary Clinton in the recent Primary contest.
Many see Ohio as a must win as no Republican has ever won the White House without it.
The feeling on the streets here is that they aren't keen on either candidate- so it is all to play for.
Paris is angling to grab lucrative finance deals from London after a Brexit - but it could lose out on wine exports to thirsty Britons.Read the full story ›
Video report by ITV News Europe Editor James Mates.
Francois Hollande today warned Theresa May that she cannot pick and choose among EU rules as the two met to begin talking over a Brexit.
The French president has been among the toughest of negotiators over Britain's planned EU exit.
Today his language was more conciliatory - but he stressed that the UK can't enjoy unfettered access to the single market unless it also allows free movement of EU nationals.
In turn, Ms May insisted that the UK will not be rushed into starting formal talks leading to a Brexit as she said it would take time to reach the right agreement.
Theresa May has insisted that she won't be rushed into triggering the start of a Brexit as she met Francois Hollande.
Mrs May said that "it will take time" to prepare for the start of formal steps towards the UK exiting the EU as she appeared at a press conference with the French president.
It comes after Mr Hollande said today he would urge Mrs May not to "drag on" the process.
Mrs May today said she had "excellent" and "very open" discussions over the issue - but there was more work to do.
As the UK leaves the EU we will have to determine how to maintain the closest possible economic relationship between our countries.
And it will take time to prepare for those negotiations.
I understand the need for certainty and confidence in the markets, and that is why I've already been clear that the UK will not invoke article 50 until before the end of this year.
Theresa May has arrived in Paris on her first foreign trip as the British prime minister.
She was met by the French premier Francois Hollande this afternoon as she arrived from Germany on a whistle-stop European tour.
Ms May is discussing the terms for a UK exit from the EU with fellow leaders.
Mr Hollande has already made clear that he will warn Mrs May not to drag her feet over the start of formal talks over a Brexit.
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Francois Hollande will tell Theresa May that Brexit talks must start quickly when the pair meet today.
The French president is expected to say he does not want there to be any "pre-negotiations".
Mr Hollande and the prime minister will hold talks on Britain's plans to quit the EU when they meet in Paris.
The French President will host a working dinner at the Elysee Palace, a day after Mrs May met German counterpart Angela Merkel.
At discussions in Berlin, the Chancellor said Britain should "take a moment" over its plans to sever its ties with Brussels but warned against leaving the negotiations "up in the air".
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